Biology Forums - Study Force

Biology-Related Homework Help General Biology Topic started by: Peezy on Apr 9, 2013



Title: Determinants of Heredity and Genetic Variation
Post by: Peezy on Apr 9, 2013
Meiosis guarantees that in a sexual life cycle, offspring will inherit one complete set of chromosomes (and their associated genes and traits) from each parent. The transmission of traits from parents to offspring is called heredity.
Another important aspect of meiosis and the sexual life cycle is the role these processes play in contributing to genetic variation. Although offspring often resemble their parents, they are genetically different from both of their parents and from one another. The degree of variation may be tremendous.

The following processes are associated with meiosis and the sexual life cycle:
•DNA replication before meiosis
•crossing over
•chromosome alignment in metaphase I and separation in anaphase I
•chromosome alignment in metaphase II and separation in anaphase II
•fertilization



Sort each process into the appropriate bin according to whether it contributes to heredity only, genetic variation only, or both.









 


Title: Re: Determinants of Heredity and Genetic Variation
Post by: robertling on Apr 9, 2013
C'mon, your question doesn't even include a diagram!

Anyway, from what you've offered, I could be wrong, depending on the viewpoint of your teacher. Realize that if it contributes to heredity, it's something that the next offspring will have, regardless as to weather it's by mitosis or meiosis. I'll sort them into the 3 categories. If you wish for me to explain, post back.

Heredity Only - 1, 3, 5 (if it's asexual)
Genetic Variation only - 2, 4, 5 (sexual), 3 (since crossing over occurred)
Both - All of them

I could easily be wrong, so you may want to check your bio book. Number 3 for Heredity is arguable depending on how you see it. Sorry if I wasn't much help. Hope this helps.


Title: Re: Determinants of Heredity and Genetic Variation
Post by: R3N-R3N on May 31, 2013
Ok I'm just a tad bit confused on this since there isn't a diagram on the question. Could you please help out with the diagram??


Title: Re: Determinants of Heredity and Genetic Variation
Post by: duddy on May 31, 2013
Content hidden


Title: Re: Determinants of Heredity and Genetic Variation
Post by: R3N-R3N on May 31, 2013
Thank You  ;D


Title: Re: Determinants of Heredity and Genetic Variation
Post by: duddy on May 31, 2013
Thank You  ;D

You're welcome, but did it work for you?


Title: Re: Determinants of Heredity and Genetic Variation
Post by: Had the same question on Jul 12, 2013
Yes, it was the right answer. Thank you


Title: Re: Determinants of Heredity and Genetic Variation
Post by: annie1234 on Nov 5, 2013
thank u


Title: Re: Determinants of Heredity and Genetic Variation
Post by: sniderwes on Jan 11, 2014
Thanks for the response!


Title: Re: Determinants of Heredity and Genetic Variation
Post by: dragonli on Mar 14, 2015
the answer depends from one question to another. If you have the variable DNA replication (assume no error) then the answer is stated as on top. However, if it only mentions DNA replication, I think everything goes in the both category


Title: Re: Determinants of Heredity and Genetic Variation
Post by: Mischa812 on Jun 29, 2020
Thank you!


Title: Re: Determinants of Heredity and Genetic Variation
Post by: Timothy (Tim) Keiley on Oct 18, 2020
thank you


Title: Re: Determinants of Heredity and Genetic Variation
Post by: Coby Herndon on Feb 11, 2021
thbak you